Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc0095659a074ac…

MALICIOUS

PDF

78.4 KB Created: 2021-04-22 19:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 565f9ca166140f9f7de53323551aafd0 SHA-1: 9dc1e6753da0203abdc63d1f7f316a76f230a857 SHA-256: 9dc0095659a074ac519683c96de25d387184fe4df97d10b5d703c7ee18300b35
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, including a suspicious URL related to game cheats, suggesting a phishing or link farm attempt. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://midufefew.ru/strik?utm_term=gta+v+online+money+cheat+pc+2020 PDF link annotation
    • https://pikopivani.weebly.com/uploads/1/3/4/5/134510180/1256122.pdfIn PDF document text
    • http://lofajemami.sportsontheweb.net/antonio_lupi_piana.pdfIn PDF document text
    • https://cdn.sqhk.co/libudezetuv/Qe04gdy/a_world_of_ice_and_fire_book_amazon.pdfIn PDF document text
    • https://fejumarawa.weebly.com/uploads/1/3/4/6/134611790/jepesuxug_pebar_joxiberizozo.pdfIn PDF document text
    • https://vifapuxup.weebly.com/uploads/1/3/4/0/134018045/pukagef_dojaxenomi_zonozinaxif_wawusibikiki.pdfIn PDF document text
    • https://vudunige.weebly.com/uploads/1/3/5/9/135981242/sikizuw-jedadi-lonosalojupuj.pdfIn PDF document text
    • https://cdn.sqhk.co/wulupumiwi/fhbAW4E/wowukanamilolejiwako.pdfIn PDF document text
    • https://cdn.sqhk.co/xenekifa/cwhiXid/zisilajatodujupifop.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/cjghgge/wifi_file_transfer_for_pc.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/95854058819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0d2b13-852b-4902-9cad-6f0654af9e19/itil_service_operation_definition.pdfIn PDF document text
    • https://c3a7a64c-5591-430b-94d7-c2eadfdf3523.filesusr.com/ugd/966478_963824d1989942fc8e832263dfe87fdc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/fodejigabojewoxiverimewel.pdfIn PDF document text
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_efd51a4b73dd489885865df1e85202cd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/likerajatob/bingo_games_offline.pdfIn PDF document text
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_f7af490e94c040d895630875e6d95137.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/a_ilha_aldous_huxley.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/alanganallur_jallikattu_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e8b19a-336c-4d7a-b510-2fe70c444dbb/online_booking_software_canada.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 5368 bytes
SHA-256: 60f0a140ba367f2619d2858869e91ebf63b79040fbd4b2464fb52bbe038888f7
font_01_sfnt_off00010757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10757 10916 bytes
SHA-256: c3a0324e1ad89f8d3ba0a33fd0c3b5317c3f88fad4c876d511c52c3b19fdd29c

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